Hydraulic motor and the like.



0. P. ROE-R.

HYDRAULIC MOTOR AND THE LIKE.

APPLIGATION IILED PEB.20, 1913.

Patnted June 23, 1914.

COLUMBIA PLANOURAPII 130., WASHINGTON, D4 c.

rrron.

OTTO IP. ROI-IR, OF SEATTLE, WASHINGTON.

HYDRAULIC MOTOR AND THE LIKE.

Specification of Letters Patent.

. Patented June 23, 1914.

Application filed February 20, 1913. Serial No. 749,644.

To all whom it may concern Be it known that I, Orro P. ROHR, a subjectof the King of Norway, and a resident of the city of Seattle, in thecounty of King and State of lVashington, have invented certain new anduseful Improvements 1n Hydraulic Motors and the like, of which thefollowing is a specification.

My invention has particular reference to apparatus .of the above typeoperated through pressure of the fluid, and has for one of its objectsto provide novel mechanism wherein a prime mover, or piston is mountedfor movement in a runway composed of a plurality of sections throughwhich the fluid flows to drive the piston.

A further object resides in the provision of mechanism for controllingthe fluid in the runway sections.

Other objects will be set forth as my description progresses and thosefeatures of construction, arrangements and combinations of parts onwhich I desire protection, succinctly defined in my annexed claims.

Referring to the accompanying drawing wherein like numerals of referenceindicate like parts throughout: Figure 1 is a horizontal section of myapparatus. Fig. 2 is a vertical section taken on line 22 of Fig. 1.

Referring to the drawing by numerals of reference, 1 indicates a casinghaving an internal chamber 2 encircled by a runway 3 and communicatingtherewith through an opening or passage 10. In runway 3 a piston orprime member 4 is arranged for operation.

Casing 1 is provided with fluid inlet ports 1, 1", whose inner endportions are enlarged, as at 1 so thatvalves 6, which divide runway 3into sections 3, 3 when opened, as shown by dotted lines in Fig. 1, willnot cut-off the ingress of water.

I provide mechanism under control of piston 4 for controlling passage 10so that the water is alternately confined in and permitted to dischargefrom a runway section. Such mechanism comprises a valve or closure 11,which is substantially the shape of a half disk fixed to piston 4. Asnow considered, I prefer to fit valve 11 in passage 10, this arrangementbeing simple and enabling me to connect piston 4 to a shaft 13 throughthe medium of a perforated web portion 12, as clearly shown.

While this construction and arrangement of parts just described, issimple, durable and compact, it can be readily modified withoutdeparting from the spirit of my invention, defined in my annexed claims.

With valve 11 arranged as described, outlet passage 10, which must becontinuous, consists of the space between cylindrical alin-' ingextensions 2 of easing heads 7 and 8, which extensions form the sidewall of chamber 2. Valve 11 is of sufficient peripheral length toentirely or practically entirely close a section of runway 3,-as shownin Fig. 1. Piston 4 is on one end of valve 11. Therefore, as piston 4passes a valve 6, valve 11 gradually opens the runway section just leftto relieve back pressure on the other valve 6 and closes the presentrunway section at the rear of the piston to confine the water flowingthrough the adjacent inlet port. Further, it will be observed that thatportion of the runway forward of the piston is open to exhaust, as isalso the succeeding runway section. The water or fluid after passingthrough the passage 10 on opening of the latter by the valve 11, passesto either side of said valve within the chamber 2 and thence out throughthe perforated head 7. Valves 6 are slightly curved in cross-section andprovided with trunnions 16 j ournaled in heads 7 and 8, and have bearingin seats 16 of casing 1 at the forward side of the enlarged ends 1 ofthe inlet ports. They further preferably abut the cylindrical extensions2.

To obtain a more eflicient driving action of water on the piston I formthe rear face of the latter concave and inclined forwardly in an outwarddirection so that it and the adjacent face of a valve 6 will convergetoward-shaft 13 when the piston is moving past an inlet port. Theforward faceof piston 4 is convex and inclined rearwardly in an outwarddirection. Therefore, only the free end portion of a valve 6 willengage'the piston during the opening movement of the valve, thus ridingover the face of the piston to permit of the passage of the Having thusdescribed my invention, what I claim as new, and desire to secure byLetters Patent oi the United States of America, is

1. In mechanism of the character described, a continuous runway dividedinto sections each having an inlet passage and an outlet passage, valvescontrolling communication between the sections of said run way, a pistonin said runway and. means operated by said piston to gradually open theexhaust passage of one runway section during advance movement of saidpiston in the preceding runway-section.

2. In mechanism of the character described, a continuous runway dividedinto sections each having an inlet passage and an outlet .)assage,valves controlling communication between the sections of said runway, apiston in said runway and means operated by said piston to graduallyopen the exhaust passage of a runway section following move ment of saidpiston from such section.

3. In mechanism of the character described, a casing provided with aninternal chamber, a continuous runway extending about the internalchamber of said casing, said runway being divided into sections eachhaving an inlet passage and an outlet passage, the outlet passage ofsaid runway sections communicating with the chamber of said casing,valves controlling communication between the sections of said runway, apiston in said runway and means operated by said piston for alternatelyclosing the outlet passages of said runway sections.

at. In mechanism of the character described, a casing, a continuousrunway in said casing divided into sections, a. chamber in said casinglying inwardly of the said runway and provided in its wall with meansfor establishing communication between said chamber and the runwaysections, valves controlling communication between the runway sections,a piston in said runway, and means movable with said piston forcontrolling the exhaust means of said chamber for cutting oft fromexhaust that portion of a runway section between the piston and theinlet port of the section in which the piston is operating and openingto exhaust that portion of such runway section lying forwardly of thepiston.

5. In mechanism of the character described, a casing, a continuousrunway in said casing divided into sections, a chamber in said casing lyng inwardly of the said runway and provided in its wall with means forestablishing communication between said chamber and the runway sections,valves controlling communication between the runway sections, a pistonin said runway, and means movable with said piston for controlling theexhaust means of said chamber for cutting ofi from exhaust that portionof a runway section between the piston and the inlet port of the sectionin which the piston is operating and opening to exhaust that portion ofsuch runway section lying forwardly of the piston, and then opening toexhaust the next runway section prior to the entrance of the pistontherein.

6. In mechanism of the character de scribed, a casing, a continuousrunway in said casing divided into sections each of which has its ownintake and exhaust pas sages, valves controlling connnunication betweenthe sections of said runway, a piston in said runway, and means movablewith said piston for controlling commimication between a section and itsexhaust passage to successively open to exhaust the front portion of arunway section in which the piston is moving and then the succeedingrunway section in advance of the entrance of the piston therein.

7. In mechanism of the character described, a casing, a continuousrunway in said casing divided into sections each of which is providedwith intake and exhaust passages, valves controlling communicationbetween the sections of said runway, a piston movable in said runway,and valve means movable with said piston for simultaneously maintainingopen to exhaust the runway sections on opposite sides of and in advanceof a valve and further maintaining closed to exhaust that portion of therunway section lying between the piston and the section inlet port.

8. In mechanism of the character de scribed, a casing provided with arunway, an internal chamber opening into said runway and forming adelivery passage therefor, valves in the runway of said casing anddividing the same into sections, inlet ports for each of the said runwaysections, a piston in said run way, and valve means controlling thecommunication between said runway and said internal chamber movable withsaid piston.

9. In mechanism of the character do scribed, a casing, a runway in saidcasing, an internal chamber at the inner side of said runway, saidchamber having its wall formed with a passage for the delivery of waterfrom the runway, valves in said runway dividing the same into sections,inlet ports for the sections of said runway, a piston in said runway,and a closure means for the passage of said chamber wall movable withsaid piston to alternately close the runway sections to communicationwith said chamber.

10. In mechanism of the character described, a casing, a continuousrunway in said casing, valves dividing said runway into sections, inletports for the sections of said runway communicating therewith inproximity to said valves, a piston in said runway, said valves beingarranged to be engaged and moved by said piston to permit of the passageof the latter, an outlet passage for said runway, and means operated bysaid piston for opening and closing said outlet passage.

11. In mechanism of the character described, a casing having an internalcylindrical wall formed with a continuous opening, a runway in saidcasing extending about said cylindrical wall, valves in said runway,means for admitting fluid to said runway, a piston in said runway, andclosure means for the opening of said cylindrical wall normally coveringonly a portion of said opening and being movable with said piston.

12. In mechanism of the character described, a casing having an internalcylindrical wall formed with a continuous opening, a runway in saidcasing extending about said cylindrical wall, valves in said runway,means for admitting fluid to said runway, a piston in said runway,closure means for the opening of said cylindrical wall extending throughsaid opening and normally closing only a portion thereof, said pistonbeing fixed to said closure, and a shaft within said cylindrical wallfixed to said closure.

Signed at Seattle, Washington, this 10th day of February, 1913.

OTTO P. ROI-IR. Witnesses:

R. E. BORGAN, STEPHEN A. BROOKS.

Copies of this patent may be obtained for five cents each, by addressingthe commissioner of Patents,

Washington, D. C."

